RIFF JTAG – Samsung Nexus S (i9023) Unbrick Boot repair supported

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04.05.2011  Samsung Nexus S (i9023) Unbrick Boot repair supported

Samsung I9023 is based on the S5PCxxx Processor (ARM core is Cortex-A8).
Note, one simple way to connect over JTAG – connect USB cable to PC and insert battery. In this case phone is automatically powered on. But note, in very rare cases it is possible that you will have to hold Power On key during initial connection.
Current resurrector has two different versions of primary boot loaders (PBL) embedded. This depends on hardware version of your phone which boot to use, thus in case of failure (cannot enter download mode after resurrection) of first loader try selecting another.
In case after resurrection (after you have tried with both boot versions) the download mode is not initiated (LCD remains blank) do repeat resurrection with ‘Clone Gremlin zone’ option checked.

To resurrect Samsung I9023:

  • Solder JTAG cable to Samsung I9023 JTAG pads;
  • Connect microUSB cable to phone and PC;
  • Insert battery;
  • Make sure Samsung I9023 is selected in the list of models;
  • Make sure a fixed TCK frequency is selected;
  • Click Resurrect button;
  • Wait till software signals a successful operation completion;
  • Disconnect USB cable, de-solder JTAG wires;

Now phone is in bootable condition, that is, even if it does not start up normally, you can flash it using original Samsung downloader software to restore it to the working state.

To enter download mode:

  • Disconnect PC cable;
  • Insert battery;
  • Hold both ‘Volume Down’ and ‘Home’ keys and press Power-On.

Please click “Check For Updates” button in order to download and apply new files. Closing all running application before starting update process is recommended.